compressor clutch motor engages/disengages every 20 seconds

[dnomyar]

is this the normal cycle of the compressor clutch motor while idling? just had the aircon system cleaned and recharged with refrigerant. (RA134)
thank you in advance,

[sirkosero]

is this the normal cycle of the compressor clutch motor while idling? just had the aircon system cleaned and recharged with refrigerant. (RA134)
thank you in advance,

No. Check baka overcharged. High pressure yan. Nung nagkakarga ba ng refrigerant, binasa ba nila condenser? If yes, overcharged nga yan

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[dnomyar]

No. Check baka overcharged. High pressure yan. Nung nagkakarga ba ng refrigerant, binasa ba nila condenser? If yes, overcharged nga yan

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Thanks for the info. Ibabalik ko na lang uli sa shop para maremedyohan.

[mina_nuka]

is this the normal cycle of the compressor clutch motor while idling? just had the aircon system cleaned and recharged with refrigerant. (RA134)
thank you in advance,

Is "what" normal?

[benchph1]

If you have a friend or officemate who has the same car, have him/her start the engine of their car and turn on the AC. Observe the on/off cycle of the compressor.


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[dr. d]

is this the normal cycle of the compressor clutch motor while idling? just had the aircon system cleaned and recharged with refrigerant. (RA134)
thank you in advance,

as they said, "high pressure".
either they put in too much refrigerant, or you have a blocked tubing in your system.
bring it back to the shop. the solution might be easier than you imagine.

[dnomyar]

Is "what" normal?

ok, ok, i have to rephrase, standard maybe?

[oj88]

I believe it's normal. My Civic does it... as well as my Innova.

The cycle time gets shorter and shorter when the climate control has achieved the preset target temp.

On the Civic, it can go as short as 5-10 seconds on and/or off.

[dnomyar]

I believe it's normal. My Civic does it... as well as my Innova.

The cycle time gets shorter and shorter when the climate control has achieved the preset target temp.

On the Civic, it can go as short as 5-10 seconds on and/or off.

thanks... i guess it varies due to ambient temperature. when it is operating at high noon, the time the compressor clutch engaged is longer and shorter time when it is disengaged. early morning it is in the reversed order.

[dr. d]

thanks... i guess it varies due to ambient temperature. when it is operating at high noon, the time the compressor clutch engaged is longer and shorter time when it is disengaged. early morning it is in the reversed order.

i just adjust the temp setting to the cooler temp.
in a non-defective system, this usually results in less of that engage-disengage clicking.
in a defective system, it won't change.

[mina_nuka]

From jick on another forum







The duty cycle of the a/c clutch is subjective with the following factors considered:
Refrigerant pressure in the system,
Ambient temperature,
Cabin temperature,
Coolant temperature,
Control setting,
Throttle position sensor signal,
Sun load sensor signal,
Engine rpm.



There is no particular pattern unless your system is that of the old non-climate control system that relies on the a/c amplifier, or the pressure switch of the CCOT (cycling clutch orifice tube) type.


Climate control is a more precise localized temperature targeting.
In hybrids and electric cars, you dont have a compressor clutch and therefore you shouldnt be able to hear a clutch-like click on engagement

[dr. d]

always so formal, jick is.

[dnomyar]

i just adjust the temp setting to the cooler temp.
in a non-defective system, this usually results in less of that engage-disengage clicking.
in a defective system, it won't change.

i guess you're right. I increase the thermostat switch to higher setting about 3/4 turn of the knob and the fan at no. 2 and yes the interval changed. the compressor clutch is disengaged at a longer time and engaged at a shorter time. thanks for the inputs.

[dnomyar]

From jick on another forum







The duty cycle of the a/c clutch is subjective with the following factors considered:
Refrigerant pressure in the system,
Ambient temperature,
Cabin temperature,
Coolant temperature,
Control setting,
Throttle position sensor signal,

Sun load sensor signal,
Engine rpm.



There is no particular pattern unless your system is that of the old non-climate control system that relies on the a/c amplifier, or the pressure switch of the CCOT (cycling clutch orifice tube) type.




Climate control is a more precise localized temperature targeting.
In hybrids and electric cars, you dont have a compressor clutch and therefore you shouldnt be able to hear a clutch-like click on engagement

thank you for the comprehensive explanation.... i guess it was just much ado about nothing on my part.